The Holy Spirit: scriptural origins
Christians believe that the Holy Spirit is the power of God at work on the Earth. In the scriptures it is often depicted as wind, fire or in the form of a dove. It is through the power and workings of the Holy Spirit that God is known today, and how Christians can know what God wants them to do.
In John's Gospel, Jesus tells his apostles that, when he must leave them, God will send the Holy Spirit who:
"will teach you all things and will remind you of everything I have said to you."— John 14:25-26